420112542 has 8 divisors (see below), whose sum is σ = 840225096. Its totient is φ = 140037512.

The previous prime is 420112507. The next prime is 420112559. The reversal of 420112542 is 245211024.

It is a sphenic number, since it is the product of 3 distinct primes.

420112542 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35009373 + ... + 35009384.

It is an arithmetic number, because the mean of its divisors is an integer number (105028137).

Almost surely, 2^420112542 is an apocalyptic number.

420112542 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420112542 is a wasteful number, since it uses less digits than its factorization.

420112542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70018762.

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 420112542 is about 20496.6470916587. The cubic root of 420112542 is about 748.9541226431.

Adding to 420112542 its reverse (245211024), we get a palindrome (665323566).

The spelling of 420112542 in words is "four hundred twenty million, one hundred twelve thousand, five hundred forty-two".